Linking directly to a particular post.You can link to any post directly by right clicking the title of that post which is usually preceded by "RE:", after right clicking the terminology may vary slightly depending on your browser but it will be something similar to "Copy link location" which is used in Firefox. For example the link for this topic is:

If a post you wish to quote is one of the last 15 replies instead of hitting the quote button the post you can hit click reply like you normally do. On the bottom of the page you'll find the last 15 posts made,. From here you can quote an entire post, a snippet of text from the post or even multiple posts. After hitting the post reply button first click the posting pane to place the cursor when you want the quote to appear. Scroll down to the bottom to view the topic review pane. You can quote an individual post by clicking the quote button or if you just want to quote a snippet of text highlight what you want to quote and then hit the quote button.

Links that are posted to pages are automatically turned into clickable links, you do not need to use the URL bbcode. When copying a link from another page either use the address bar or right click the link and select "Copy link location" or similar text depending on your browser. You can just copy the link text displayed on the page in some cases but they are often shortened as they are here and will not work, for example this link: